#admin {

    background: #fff;
    border-radius: 10%;
}


.container{
    width: 400px !important;
    height: 300px !important;
}
#app{
    text-align: center !important;
    width: 100% !important;
    height: 100% !important;
    padding-top: 150px !important;
}
body{
    background-image: url('../image/guidao1.jpg');
    background-size: 100% 100%;
    background-repeat: no-repeat;   /*这个时候就会不重复平铺*/
    background-attachment: fixed;   /* 设置背景图像是否固定或者随着页面的其余部分滚动。 */
}